<?php
/**
 * This code is licensed under the BSD 3-Clause License.
 *
 * Copyright (c) 2017, Maks Rafalko
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * * Redistributions of source code must retain the above copyright notice, this
 *   list of conditions and the following disclaimer.
 *
 * * Redistributions in binary form must reproduce the above copyright notice,
 *   this list of conditions and the following disclaimer in the documentation
 *   and/or other materials provided with the distribution.
 *
 * * Neither the name of the copyright holder nor the names of its
 *   contributors may be used to endorse or promote products derived from
 *   this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

declare(strict_types=1);

namespace Infection\Mutator\Removal;

use Infection\Mutator\MutatorConfig;
use const PHP_INT_MAX;
use Webmozart\Assert\Assert;

/**
 * @internal
 */
final readonly class ArrayItemRemovalConfig implements MutatorConfig
{
    private const REMOVE_VALUES = [
        'first',
        'last',
        'all',
    ];

    private string $remove;

    private int $limit;

    /**
     * @param array{remove?: string|null, limit?: int|null} $settings
     */
    public function __construct(array $settings)
    {
        $this->remove = $settings['remove'] ?? 'first';
        $this->limit = $settings['limit'] ?? PHP_INT_MAX;

        Assert::oneOf($this->remove, self::REMOVE_VALUES);
        Assert::integer(
            $this->limit,
            'Expected the limit to be an integer. Got "%s" instead',
        );
        Assert::greaterThanEq(
            $this->limit,
            1,
            'Expected the limit to be greater or equal than 1. Got "%s" instead',
        );
    }

    /**
     * @psalm-mutation-free
     */
    public function getRemove(): string
    {
        return $this->remove;
    }

    /**
     * @psalm-mutation-free
     */
    public function getLimit(): int
    {
        return $this->limit;
    }
}
